House underpinning

mizzbonita

FreeBear said:

mizzbonita said: The only reason I looked at getting repointing is because I had slight damp on an internal wall which I think is coming from the drains being blocked.

So the injected DPC and associated waterproof render/plaster internally hasn't fixed the damp.... No surprise there.

The crack either side of the stone sill is quite likely the primary cause of any damp internally. Get that fixed, and along with the repointing, much of the damp should disappear. Removing the concrete from the front, reducing the soil level, and putting in a french drain will also help. The original DPC would typically be in the mortar joint just above or below the air brick - Certainly not where some wally has been drilling holes. 

No that DPC was done years ago, before I purchased. I haven’t had any damp the 11 years I’ve been here. This is the first time ☹️

mizzbonita

Thanks for the advice freebear 

weeg

Seconding that you need a structural engineer to take a look, but odds are it's a drain issue.

Phil4432

Drainage at the base of the bay windows mate, looks like water has been congregating there for sometime, especially where the mold/mildew is.  That definitely needs to rectified, so that the rainwater is draining directly into the drain.  The cracks in between the paving, need to be filled.  No water should be sitting around there, after rain.  And most definitely not going into those cracks.  That could well cause damp.

A French drain is a solution, I prefer channel and grating. 

It might be subsidence, whether it needs underpinning remains to be seen.  It may be a bit of settlement, and no need underpinning.  It needs a structural engineer, as a few have said.